39 citations · 182 across the 24 of their papers we have counts for
4 papers · 1 filter
Defining rough sets as core-support pairs of three-valued functions
Jouni Järvinen, Sándor Radeleczki
We answer the question what properties a collection of three-valued functions on a set must fulfill so that there exists a quasiorder on such that the…
Algebraic Approach to Directed Rough Sets
Mani A, Sandor Radeleczki
In relational approach to general rough sets, ideas of directed relations are supplemented with additional conditions for multiple algebraic approaches in this research paper. The…
Notes on the lattice of fuzzy rough sets with crisp reference sets
Dávid Gégény, László Kovács, Sándor Radeleczki
Since the theory of rough sets was introduced by Zdzislaw Pawlak, several approaches have been proposed to combine rough set theory with fuzzy set theory. In this paper, we examine…
The structure of multigranular rough sets
Jouni Järvinen, Sándor Radeleczki
We study multigranulation spaces of two equivalences. The lattice-theoretical properties of so-called "optimistic" and "pessimistic" multigranular approximation systems are given.…